/*
 * 后台公共js函数库
 *
 */

/*
 * Ajax提交函数
 *
 *	url	 提交地址
 *	form	表单ID名
 *	jump	成功后跳转地址
 */
function AjaxSubmit(url,form,jump){
	$.ajax({
		url:url,
		type:'post',
		data:$('#'+form).serialize(),
		error:function(XMLHttpRequest,textStatus,errorThrown){  
			$.lagou.alert(XMLHttpRequest.status,0);
			$.lagou.alert(XMLHttpRequest.readyState,0);
			$.lagou.alert(textStatus,0);
			$.lagou.formHide();  
		},
		success:function(data){
			$.lagou.alert(data.msg,data.code,5);
			$.lagou.formHide();
			if(data.code==1){
				location.href = jump;
			}
			else{
				location.reload();
			}
		}
	});
}

/*
 * 实例化WebUploader单图上传函数
 *
 *	url	 	服务器端地址
 *	pick	input file ID名
 *	Input	回调隐藏表单
 *	ImgShow	img	src路径
 *  ImgSpan	外层Span元素
 */
function NewWebUploader(url,pick,Input,ImgShow,ImgSpan){
	var uploaderOne = WebUploader.create({
		auto:true,
		swf:'/Public/webuploader/Uploader.swf',
		server:url,
		pick:'#'+pick,
		accept:{
			title:'Images',
			extensions:'gif,jpg,jpeg,bmp,png',
			mimeTypes:'image/*'
		},
		thumb:{
			width:300,
			height:300,
			quality:70,
			allowMagnify:false,
			crop:true,
			type:'image/jpeg'
		}
	});

	// 文件上传成功，回调
	uploaderOne.on('uploadSuccess',function(file,response){
		if(response.code == 1){
			$('#'+Input).val(response.src);
			$('#'+ImgShow).attr('src',response.src);
			$('#'+ImgSpan).show();
		}
		else{
			$.lagou.alert(response.msg,0);
			$.lagou.formHide();
		}
	});
}
 
/*
 * 图片删除函数
 *
 *	img	 图片路径
 *	Input	回调隐藏表单
 *	ImgShow	img	src路径
 *  ImgSpan	外层Span元素
 */
function RemoveImg(img,Input,ImgShow,ImgSpan){
	if(img==""){
		$.lagou.alert("没有要删除的图片！",0,5);
		$.lagou.formHide();
	}
    $.ajax({
        type:"POST",
        url:"/admin.php?m=Admin&c=Base&a=RemoveImg",  
        data:{'img':img},
		dataType:"json",
        cache:false,
		error:function(XMLHttpRequest,textStatus,errorThrown){     
       		$.lagou.alert(XMLHttpRequest.status,0);
			$.lagou.alert(XMLHttpRequest.readyState,0);
			$.lagou.alert(textStatus,0);
			$.lagou.formHide();  
    	},
        success:function(data){
			if(data.code==1){
				$('#'+Input).val('');
				$('#'+ImgShow).attr('src','');
				$('#'+ImgSpan).hide();
			}
			else{
				$.lagou.alert(data.msg,data.code,5);
				$.lagou.formHide();
			}
        }
    });
};

/*
 * Modal框架函数
 *
 *	url	 加载地址
 *	elementId	ID
 */
function ModalHtml(url,id){
	var Id = id ? id : "Modal";
	$.get(url,function(data){
		$('#'+Id).html('').html(data);
	});
	//$('#'+Id).modal({show:true});
};

/*
 * 实例化WebUploader上传函数
 *
 *	url	 请求地址
 *	fid	 点击按钮Id
 *	flabel	点击按钮
 *	hid	回调Id
 */
function NewWebUploaderMore(url,fid,flabel,hid){
	
	var Url = url ? url : '/admin.php?m=Admin&c=Base&a=UploadMorePicture';	//url	 请求地址
	var Fid = fid ? fid : 'filePicker';		//fid	 点击按钮Id
	var Flabel = flabel ? flabel :'点击选择图片';	//flabel	点击按钮
	var Hid = hid ? hid : "Picture";	//hid	回调Id
	var $wrap = $('#uploader'),
	
		// 图片容器
		$queue = $('<ul class="filelist"></ul>')
		.appendTo($wrap.find('.queueList')),
				
		// 状态栏，包括进度和控制按钮
		$statusBar = $wrap.find('.statusBar'),

		// 文件总体选择信息。
		$info = $statusBar.find('.info'),

        // 上传按钮
        $upload = $wrap.find('.uploadBtn'),

        // 没选择文件之前的内容。
        $placeHolder = $wrap.find('.placeholder'),

        $progress = $statusBar.find('.progress').hide(),

        // 添加的文件数量
        fileCount = 0,

        // 添加的文件总大小
        fileSize = 0,

        // 优化retina, 在retina下这个值是2
        ratio = window.devicePixelRatio || 1,

        // 缩略图大小
        thumbnailWidth = 110 * ratio,
        thumbnailHeight = 110 * ratio,

        // 可能有pedding, ready, uploading, confirm, done.
        state = 'pedding',

        // 所有文件的进度信息，key为file id
        percentages = {},
		
        // 判断浏览器是否支持图片的base64
        isSupportBase64 = ( function(){
            var data = new Image();
            var support = true;
            data.onload = data.onerror = function(){
                if( this.width != 1 || this.height != 1 ){
                    support = false;
                }
            }
            data.src = "";
                return support;
        })(),

        // 检测是否已经安装flash，检测flash的版本
        flashVersion = (function(){
            var version;
            try{
                version = navigator.plugins['Shockwave Flash'];
                version = version.description;
            } 
			catch(ex){
                try{
                    version = new ActiveXObject('ShockwaveFlash.ShockwaveFlash')
                    .GetVariable('$version');
                }
				catch(ex2){
                    version = '0.0';
                }
            }
            version = version.match( /\d+/g );
            return parseFloat(version[0]+'.'+version[1],10);
        })(),

        supportTransition = (function(){
            var s = document.createElement('p').style,
                r = 'transition' in s || 'WebkitTransition' in s || 'MozTransition' in s || 'msTransition' in s || 'OTransition' in s;
                s = null;
                return r;
        })(),

        // WebUploader实例
        uploader;

        if(!WebUploader.Uploader.support('flash') && WebUploader.browser.ie){

            // flash 安装了但是版本过低。
            if (flashVersion){
                (function(container){
                    window['expressinstallcallback'] = function( state ){
                        switch(state){
                            case 'Download.Cancelled':
                                alert('您取消了更新！')
                                break;

                            case 'Download.Failed':
                                alert('安装失败')
                                break;

                            default:
                                alert('安装已成功，请刷新！');
                                break;
                        }
                        delete window['expressinstallcallback'];
                    };

                    var swf = '/Public/webuploader/image_upload/expressInstall.swf';
                    // insert flash object
                    var html = '<object type="application/' +
                            'x-shockwave-flash" data="' +  swf + '" ';

                    if(WebUploader.browser.ie){
                        html += 'classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" ';
                    }

                    html += 'width="100%" height="100%" style="outline:0">'  +
                        '<param name="movie" value="' + swf + '" />' +
                        '<param name="wmode" value="transparent" />' +
                        '<param name="allowscriptaccess" value="always" />' +
                    '</object>';

                    container.html(html);
                })($wrap);

            // 压根就没有安转。
            }
			else{
                $wrap.html('<a href="http://www.adobe.com/go/getflashplayer" target="_blank" border="0"><img alt="get flash player" src="http://www.adobe.com/macromedia/style_guide/images/160x41_Get_Flash_Player.jpg" /></a>');
            }

            return;
        }
		else if(!WebUploader.Uploader.support()){
            alert('Web Uploader 不支持您的浏览器！');
            return;
        };
		
	//实例化WebUploader上传
	uploader = WebUploader.create({
        pick:{
            id:"#"+Fid,
            label:Flabel
        },
        formData:{
            uid:123
        },
        dnd:'#dndArea',
        paste:'#uploader',
        swf:'/Public/webuploader/image_upload/Uploader.swf',
        chunked: false,
        chunkSize: 512 * 1024,
		server: Url,
        // runtimeOrder: 'flash',
		accept:{
            title:'Images',
            extensions:'gif,jpg,jpeg,bmp,png',
            mimeTypes:'image/*'
        },
        // 禁掉全局的拖拽功能。这样不会出现图片拖进页面的时候，把图片打开。
        disableGlobalDnd:true,
        fileNumLimit:300,
        fileSizeLimit:200 * 1024 * 1024,  // 200 M
        fileSingleSizeLimit:50 * 1024 * 1024   // 50 M
    });
		//上传成功时，回调事件
	var k_aSrc='';
	uploader.on('uploadSuccess',function(file,response){
		if(response.code==1){
			k_aSrc += '@'+response.src;
			$("#"+Hid,window.parent.document).val(k_aSrc);
		}
		else{
			alert(response.msg);
		}
	});
        // 拖拽时不接受 js, txt 文件。
        uploader.on('dndAccept',function( items ){
            var denied = false,
                len = items.length,
                i = 0,
                // 修改js类型
                unAllowed = 'text/plain;application/javascript ';

            for (; i<len; i++){
                // 如果在列表里面
                if(~unAllowed.indexOf(items[i].type)){
                    denied = true;
                    break;
                }
            }

            return !denied;
        });

        // 添加“添加文件”的按钮，
        uploader.addButton({
            id: '#filePicker2',
            label: '继续添加'
        });

        uploader.on('ready',function(){
            window.uploader = uploader;
        });

        // 当有文件添加进来时执行，负责view的创建
        function addFile(file){
            var $li = $( '<li id="'+file.id+'">'+'<p class="title">'+file.name+'</p>'+'<p class="imgWrap"></p>'+'<p class="progress"><span></span></p>'+'</li>'),

                $btns = $('<div class="file-panel">'+'<span class="cancel">删除</span>'+'<span class="rotateRight">向右旋转</span>'+'<span class="rotateLeft">向左旋转</span></div>').appendTo($li),
                $prgress = $li.find('p.progress span'),
                $wrap = $li.find('p.imgWrap'),
                $info = $('<p class="error"></p>'),

                showError = function(code){
                    switch(code){
                        case 'exceed_size':
                            text = '文件大小超出';
                            break;

                        case 'interrupt':
                            text = '上传暂停';
                            break;

                        default:
                            text = '上传失败，请重试';
                            break;
                    }
                    $info.text(text).appendTo($li);
                };

            if(file.getStatus() === 'invalid'){
                showError( file.statusText );
            }
			else{
                // @todo lazyload
                $wrap.text('预览中');
                uploader.makeThumb(file,function(error,src){
                    var img;

                    if(error){
                        $wrap.text('不能预览');
                        return;
                    }

                    if(isSupportBase64){
                        img = $('<img src="'+src+'">');
                        $wrap.empty().append( img );
                    }
					else{
                        $.ajax('/Public/webuploader/image_upload/preview.php',{
                            method: 'POST',
                            data: src,
                            dataType:'json'
                        }).done(function(response){
                            if(response.result){
                                img = $('<img src="'+response.result+'">');
                                $wrap.empty().append( img );
                            }
							else{
                                $wrap.text("预览出错");
                            }
                        });
                    }
                },thumbnailWidth,thumbnailHeight);

                percentages[ file.id ] = [ file.size, 0 ];
                file.rotation = 0;
            }

            file.on('statuschange',function(cur,prev){
                if(prev === 'progress'){
                    $prgress.hide().width(0);
                }
				else if(prev === 'queued'){
                    $li.off( 'mouseenter mouseleave' );
                    $btns.remove();
                }

                // 成功
                if(cur==='error'||cur==='invalid'){
                    console.log(file.statusText);
                    showError(file.statusText);
                    percentages[file.id][1] = 1;
                }
				else if(cur === 'interrupt'){
                    showError('interrupt');
                }
				else if(cur === 'queued'){
                    percentages[file.id][1] = 0;
                }
				else if(cur === 'progress'){
                    $info.remove();
                    $prgress.css('display','block');
                }
				else if(cur === 'complete'){
                    $li.append('<span class="success"></span>');
                }
                $li.removeClass('state-'+prev).addClass('state-'+cur);
            });

            $li.on('mouseenter',function(){
                $btns.stop().animate({height:30});
            });

            $li.on('mouseleave',function(){
                $btns.stop().animate({height:0});
            });

            $btns.on('click','span',function(){
                var index = $(this).index(),
                    deg;
                switch(index){
                    case 0:
                        uploader.removeFile(file);
                        return;

                    case 1:
                        file.rotation += 90;
                        break;

                    case 2:
                        file.rotation -= 90;
                        break;
                }

                if(supportTransition){
                    deg = 'rotate('+file.rotation+'deg)';
                    $wrap.css({
                        '-webkit-transform': deg,
                        '-mos-transform': deg,
                        '-o-transform': deg,
                        'transform': deg
                    });
                }
				else{
                    $wrap.css('filter','progid:DXImageTransform.Microsoft.BasicImage(rotation='+ (~~((file.rotation/90)%4 + 4)%4) +')');
                }
            });
            $li.appendTo( $queue );
        }

        // 负责view的销毁
        function removeFile(file){
            var $li = $('#'+file.id);

            delete percentages[file.id];
            updateTotalProgress();
            $li.off().find('.file-panel').off().end().remove();
        }

        function updateTotalProgress(){
            var loaded = 0,
                total = 0,
                spans = $progress.children(),
                percent;

            $.each(percentages,function(k,v){
                total += v[0];
                loaded += v[0] * v[1];
            });

            percent = total ? loaded / total : 0;
            spans.eq( 0 ).text(Math.round(percent * 100)+'%');
            spans.eq( 1 ).css('width',Math.round(percent * 100)+'%');
            updateStatus();
        }

        function updateStatus(){
            var text = '', stats;

            if(state === 'ready'){
                text = '选中'+fileCount+'张图片，共'+WebUploader.formatSize( fileSize ) + '。';
            }
			else if(state === 'confirm'){
                stats = uploader.getStats();
                if(stats.uploadFailNum ){
                    text = '已成功上传'+stats.successNum+'张照片至相册，'+stats.uploadFailNum+'张照片上传失败！'
                }
            }
			else{
                stats = uploader.getStats();
                text = '共'+fileCount+'张（'+WebUploader.formatSize(fileSize)+'），已上传'+stats.successNum+'张';

                if(stats.uploadFailNum){
                    text += '，失败'+stats.uploadFailNum+'张';
                }
            }
            $info.html(text);
        }

        function setState(val){
            var file,stats;

            if(val === state){
                return;
            }

            $upload.removeClass('state-' + state);
            $upload.addClass('state-' + val);
            state = val;

            switch(state){
                case 'pedding':
                    $placeHolder.removeClass('element-invisible');
                    $queue.hide();
                    $statusBar.addClass('element-invisible');
                    uploader.refresh();
                    break;

                case 'ready':
                    $placeHolder.addClass('element-invisible');
                    $('#filePicker2').removeClass( 'element-invisible');
                    $queue.show();
                    $statusBar.removeClass('element-invisible');
                    uploader.refresh();
                    break;

                case 'uploading':
                    $('#filePicker2').addClass('element-invisible');
                    $progress.show();
                    $upload.text('暂停上传');
                    break;

                case 'paused':
                    $progress.show();
                    $upload.text('继续上传');
                    break;

                case 'confirm':
                    $progress.hide();
                    $('#filePicker2').removeClass('element-invisible');
                    $upload.text('开始上传');

                    stats = uploader.getStats();
                    if(stats.successNum && !stats.uploadFailNum){
                        setState('finish');
                        return;
                    }
                    break;
                case 'finish':
                    stats = uploader.getStats();
                    if(stats.successNum){
                        alert('上传成功');
                    }
					else{
                        // 没有成功的图片，重设
                        state = 'done';
                        location.reload();
                    }
                    break;
            }
            updateStatus();
        }

        uploader.onUploadProgress = function(file,percentage){
            var $li = $('#'+file.id),
                $percent = $li.find('.progress span');

            $percent.css('width',percentage * 100+'%');
            percentages[file.id][1] = percentage;
            updateTotalProgress();
        };

        uploader.onFileQueued = function(file){
            fileCount++;
            fileSize += file.size;

            if(fileCount === 1){
                $placeHolder.addClass('element-invisible');
                $statusBar.show();
            }

            addFile(file);
            setState('ready');
            updateTotalProgress();
        };

        uploader.onFileDequeued = function(file){
            fileCount--;
            fileSize -= file.size;

            if(!fileCount){
                setState('pedding');
            }

            removeFile(file);
            updateTotalProgress();

        };

        uploader.on('all',function(type){
            var stats;
            switch(type){
                case 'uploadFinished':
                    setState('confirm');
                    break;

                case 'startUpload':
                    setState('uploading');
                    break;

                case 'stopUpload':
                    setState('paused');
                    break;

            }
        });

        uploader.onError = function(code){
            alert('Eroor: '+code);
        };

        $upload.on('click',function(){
            if($(this).hasClass('disabled')){
                return false;
            }
            if(state === 'ready'){
                uploader.upload();
            }
			else if(state === 'paused'){
                uploader.upload();
            }
			else if(state === 'uploading'){
                uploader.stop();
            }
        });

        $info.on('click','.retry',function(){
            uploader.retry();
        } );

        $info.on('click','.ignore',function(){
            alert('todo');
        } );

        $upload.addClass('state-'+state);
        updateTotalProgress();
}

/*
 * 图片(单图、多图)上传函数
 *
 *	url	 提交地址
 */
function UploadPicture(url){
	var URL = url ? url : "/admin.php?m=Admin&c=Park&a=Upload";
	var uploader = WebUploader.create({
		auto:true,
		swf:'/Public/webuploader/Uploader.swf',
		server:URL,
		pick:'#Continue',
		accept:{
			title:'Images',
			extensions:'gif,jpg,jpeg,bmp,png',
			mimeTypes:'image/*'
		},
		thumb:{
			width:300,
			height:300,
			quality:70,
			allowMagnify:false,
			crop:true,
			type:'image/jpeg'
		}
	});

	// 文件上传成功，回调
	uploader.on('uploadSuccess',function(file,response){
		var num = $('#ImgContainer').children('li').length;
		var finalNum = num+1;
		if(response.code == 1){
			$('#ImgContainer').append('<li id="Atlas_'+finalNum+'" onmouseover="ShowRemoveIcon(\'Atlas_'+finalNum+'\');" onmouseout="ShowRemoveIcon(\'Atlas_'+finalNum+'\',\'out\');"><p class="imgWrap"><img src="'+response.src+'" width="110px" height="110px"></p><input type="hidden" name="atlas[]" value="'+response.src+'"/><div class="file-panel" style="height:0px;"><span class="cancel" onclick="UploadPictureRemove(\'Atlas_'+finalNum+'\',\''+response.src+'\');">删除图片</span></div></li>');
			$('#total').html(finalNum);
		}
		else{
			$.lagou.alert(response.msg,0);
			$.lagou.formHide();
		}
	});
}

/*
 * 图片(单图、多图)删除函数
 *
 *	url	 提交地址
 *	img	 图片路径
 */
function UploadPictureRemove(id,img){
	if(img==""){
		$.lagou.alert("没有要删除的图片！",0,5);
		$.lagou.formHide();
	}
    $.ajax({
        type:"POST",
        url:"/admin.php?m=Admin&c=Base&a=RemoveImg",  
        data:{'img':img},
		dataType:"json",
        cache:false,
		error:function(XMLHttpRequest,textStatus,errorThrown){     
       		$.lagou.alert(XMLHttpRequest.status,0);
			$.lagou.alert(XMLHttpRequest.readyState,0);
			$.lagou.alert(textStatus,0);
			$.lagou.formHide();
    	},
        success:function(data){
			var num = $('#ImgContainer').children('li').length;
			var finalNum = num-1;
			if(data.code==1){
				$('#'+id).remove();
				$('#total').html(finalNum);
			}
			else{
				$.lagou.alert(data.msg,data.code,5);
				$.lagou.formHide();
			}
        }
    });
}

/*
 * 图片(单图、多图)显示删除图标函数
 *
 *	id	 <li>ID
 *	type	鼠标事件类型(移入或移出)
 */
function ShowRemoveIcon(id,type){
	if(type=="out"){
		$('#'+id).find('.file-panel').css("height",'0px');
	}
	else{
		$('#'+id).find('.file-panel').css("height",'30px');
	}
}